John, I started with a $5 5RPM DC motor (DX.COM). Using two buttons (left&right) for control. Not that easy to fine-tune using an SWR-meter. Last year I switched to a stepper motor, bought controller hardware and developed a program in Visual Basic.
Check my website for building info and free download. http://www.pa0kv.nl/magnetic_loop.html (see "part 2" for the stepper) Twan - PA0KV
I have seen general definitions about motors for driving a capacitor in Mag Loop. But I have not seen a recommendation of a specific type to look for on Amazon or Ebay. For starters I am looking for a 12vdc reversible motor. I would like to start with a simple push button system for tuning. Maybe I will consider a stepper later. I think that would need some computer control. I am also wondering what RPM to consider for use on the lowest frequency (40mtrs). The capacitor I am expecting to use would not have a stop and could travel a full 360 degrees.
John Ad2F ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
